Natural language research announcements

[Rajhans Samdani <rsamdan2 AT illinois.edu>]

Hi all, 

A gentle reminder of today's AIIS talk in *3403* (Siebel Center), at 2 pm. 
Hossein 
Mobahi who is a PhD candidate advised by Prof. Yi Ma. Details: 

Title: Segmentation of Natural Images by Texture and Boundary Compression 

Abstract: We present a novel algorithm for segmentation of natural images 
that 
harnesses the principle of minimum description length (MDL). Our method is 
based 
on observations that a homogeneously textured region of a natural image can 
be well 
modeled by a Gaussian distribution and the region boundary can be effectively 
coded 
by an adaptive chain code. The optimal segmentation of an image is the one 
that 
gives the shortest coding length for encoding all textures and boundaries in 
the image, 
and is obtained via an agglomerative clustering process. The optimal 
segmentation 
also provides an accurate estimate of the overall coding length and hence the 
true 
entropy of the image. We test our algorithm on the publicly available 
Berkeley 
Segmentation Dataset. It achieves state-of-the-art segmentation results 
compared to 
other existing methods. 

Hoping to see you all, 
Rajhans 


Rajhans Samdani,
Graduate Student,
Dept. of Computer Science,
University of Illinois at Urbana-Champaign.